1 #include "tommath_private.h"
2 #ifdef BN_MP_REDUCE_IS_2K_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
4 /* SPDX-License-Identifier: Unlicense */
6 /* determines if mp_reduce_2k can be used */
7 mp_bool mp_reduce_is_2k(const mp_int *a)
14 } else if (a->used == 1) {
16 } else if (a->used > 1) {
17 iy = mp_count_bits(a);
21 /* Test every bit from the second digit up, must be 1 */
22 for (ix = MP_DIGIT_BIT; ix < iy; ix++) {
23 if ((a->dp[iw] & iz) == 0u) {
27 if (iz > MP_DIGIT_MAX) {